基于颜色对立空间的运动目标的阴影检测

Moving shadow detection based on color opposite space

利用背景差分法检测运动目标,目标阴影和目标本身均会被当作前景检测出来。针对上述问题,提出了基于颜色对立空间的运动目标阴影的检测方法。该方法首先将提取的前景图像由常见的RGB格式转换成CIELAB颜色对立空间格式,再分别对其L*、a*和b*三个通道进行边缘检测。由于CIELAB颜色对立空间所具有的接近人类视觉的特性,用上述检测出的边缘进行相关的数学形态学的处理,便可检测出阴影。实验结果表明该方法便捷快速,能够有效检测出运动目标的阴影。

The background difference algorithm detects the moving object and the targets and objectshadows are. detected as foreground. This paper presents an algorithm for moving shadow detection basedon color opposite space to solve the quest/on. It first collects the RGB format of the foreground image toconvert the CIELAB color,opposite space format, and then detects the edges of the three channels L ＊, a＊ and b ＊. Because it is close to the human visual characteristics, using the detected edge by mathematicalmorphology processing, can detect the shadow. The experimental results show it is convenient and fast, caneffectively detect the moving shadow.